318iS - Fasts failing to load

[Its me]

So, fast's still failing to load?
Bummer. Keep at it.

[e30guy]

Cheers Bloke, I'm hoping ot get an entry into the Mattara, prob be a lil laggy for a hillclimb but I'll give it a shot

[e30guy]

So, fast's still failing to load?
Bummer. Keep at it.

only just saw this :/

yer I guess you could say that Replacement engine found its home last night. Hooking it all up today!

[e30guy]

So the new engine has been in and going for a lil while now. The setup has been changed further though. The turbo was fucked.

So I bought a standard manifold and TD06SL2 (the turbine is a bit smaller than TD06H) with a nissan turbine housing setup. this means internal gate.

I modified my dump pipe to suit, hooked up water cooling lines also and was happy with progress:



Nearly ready to go off to the dyno:



Some heatshields and shit:







That was last Thursday night. Found out we have some overboosting problems. So we set it up with buggerall ignition where necessary and pretty rich and came home with 243whp @ 6300rpm. An a calculated 450Nm from a touch over 3000rpm to 6000.

But fuck it I'm going to this trackday! Dad had Friday off to try and finish the car and I cam home from work and we ended up staying home the night (normally head down the day before an event at Wakefield). We were all loaded up by 1030 and ready to go.



Overheating, Boostcut issues aside I still knocked out a 1:10.8 and was happy with that. I wanted to go home with a 10 in the bag. More importantly I came home with the car in one piece and know we are only going forwards. There is probably an easy 2 seconds left in the car once I have the overheating and overboosting issues sorted.

I've already ordered some piping to make brake ducting so that should see an improvement in that department.

There are a few contributing factors to the overheating so we are going to tackle these before returning to the dyno, controlling the boost and dialling in some ignition for some more power. NOT THAT it needs it.

The car is still incredibly easy and nice to drive. It's very well balanced and doesn't sit around spinning the wheels or anything silly. It just gets down and goes. I'm very happy with the throttle response and way the turbo comes on. Basically it goes hard!

Get these issues sorted, drive it and watch the times tumble

Here is a picture of the new front bumper we fitted as part of the conversion.

[e30guy]

A few pics from the event I found on the net:

[Cal]

Cool shots mate.

You sold your soul for a bag of horsepower.

[e30guy]

I'm pretty convinced it was worth it though. If I hadn't I'd still be puttering around with 100hp and money going out the window for no good reason

[morerevsm3]

Babbos M42 seems to make reasonable power

[333pg333]

Looks pretty good and balanced to drive. What was it boosting to? What do you have to control boost? What c/r are the pistons?

[e30guy]

Babbos M42 seems to make reasonable power

Had the dollars spent though! As it was with the engine fail it didn't go as planned, but I've already got the money I spent buying the Silvia back, so the second engine doesn't owe me much!

Looks pretty good and balanced to drive. What was it boosting too? What do you have to control boost? What c/r are the pistons?

The car has always been pretty balanced and easy to drive, we were very pleased to find that after all this work it is still so! I had set the rear sway to soft for some extra drive out of corners (figuring that might be a problem now) and this induced quite alot of understeer.

I have the boost cut set at 275kPa absolute, ~25psi.

The video was the Internal Gate with a 1 Bar actuator, no bleed valves etc.

not sure what CR the pistons are, they will be either 8.5 or 9 if they are off the shelf ones.

Tonight I got the turbo off and the wastegate flapper was hitting the dump pipe flange The die grinder will be busy tomorrow and hopefully with some fiddling around I will have the internal wastegate working well enough that I don't need to screw around with the external gate.

For boost control I will be using a PWM valve controlled by the Vi-Pec to bleed pressure off the actuator signal line and am aiming to run a constant 18-22psi depending on the driveability of it all.

[Cal]

Babbos M42 seems to make reasonable power

How much is reasonable power? What's done to it?

[e30guy]

Babich maxed out the GT3076 at 303kw ish. Has gone to a GTX3076 and looking at building a new motor currently. I'm not sure the last time the thing actually saw a race track though.

Matthuis with a similar thing and much less modified engine is making 270kw with a GT3071 pump. car does a 1:48 @ EC and 107.7 @ Wakefield

[morerevsm3]

yep, Babbos car, from memory makes 270rwkw at 3200rpm, and maxes at just over 300rwkw all the way to redline, dale should be able to pull up the run files...

[Guido]

Any links to these cars?

[morerevsm3]

RedBull, turbo maxed out, 303rwkw on ~29psi! Or :
275 on 23psi
260 on 19psi
230 on 14psi
200rwkw on 10psi!!
76rwkw with charge pipe off.... (NA)
1796cc BMW m42 4cyl

[e30guy]

He also revs it to somewhere beyond 7500rpm thanks to some solid lifters.



Matt's car is similar. Just imagine the bulk of the power curve happening around the 120-130kph mark and only going to 270.

[e30guy]

This thing now has 200kW @ 6500rpm, 18psi, but with 700 egt's. A 21psi pull results in 230kW @ 5800rpm before falling back to 200kW @ 6500rpm and holding to 7500 (boost still 21psi), but egt's go up to 900

Help????

Went to Wakey today on the 18psi tune, banged out a bunch of 1:10's, 1:09's and a best of 1:08.8. With some seat time and the engine sorted should be well under 1:08

[50RTD]

Absolutely awesome with the SR mate, beautiful workmanship, yet you got the swap done fairly quickly... impressive stuff mate!

Looks like a balltearer around the track too!

SR was definately the right decision!!!

[e30guy]

The new videos are a bit more interesting will upload later

Cheers, We absolutely busted our ass for that month. I've been dragging the chain a bit ever since.

Plans to tackle EGT's, re-fit HKS 264/272 cams and get a bellmouth dump pipe

[e30guy]

A pic or two from the track. Only visual difference is the front splitter but everyone likes pics

[e30guy]

Oh look....a video

[Cal]

A 1.08 at Wakefield is pretty fucking rapid for an E30 I reckon.

[e30guy]

More time in it with more sorting I did a couple of runs revving it right out to 7500 and made a difference of 10km/h on the front straight let alone anywhere else, and thats when I got my 1:08. Was doing 9's 10's with ease all day.

I'm hoping that with the fitment of external wastegate, bigger dump and the cams my silly high (1000degrees C) EGT's will vanish and I can beat on it all day. Then once I have some boost control on and get my massive midrange back the car should be quite a bit faster. I've only got about 10psi at 4000rpm currently, whereas before it was all (20) in about 3500!

When you factor in that I am running around on 205/225's....yer it is pretty quick, not alot of rubber on the car!

[e30guy]

Been getting ready for the next race in a bit over two weeks. I've modified my eBay manifold AGAIN and refitted the Tial MVR 44mm wastegate. Yep this also means I have a screamer pipe

Along with this I have swapped out the split dump pipe for a bellmouth dump pipe. I am hoping with all these changes I should see the back pressure problem vanish, EGT's normalise and power sky rocket (not that I need much more).

We removed all the previous wastegate stuff (that kept cracking) and machined up this boss. It has about 6mm wall and being one piece should not crack. It also has a much larger weld surafce area (larger diameter) so all these little things should add up to soomething that lasts a little bit.



Wastegate and Dump


I made up a couple of braces for the dump pipe and screamer, hopefully this additional support will help the manifold to not crack.



Going to the dyno on Friday. My coilovers are nearly finalised (yes it has taken about 4 months!) I found that one of my front shocks has failed, the shaft has side to side play! So those will have to go in before the track day also. Apart from this and a couple of little tidy up jobs I will actually be ready for the track day before the day for once!

[evil_weevil]

1.08!! congrats !!!

Me thinks you should get this AASA log booked and run the MRA - superTT series

[e30guy]

Thanks. There is much more left to go

I have been looking at regs floating around. From what I gathered, SuperTT is any CAMS class not already covered goes here? Obviously I have a mile of things to sort out before looking at W2W...major set backs would be budget and time. I don't have much longer left of uni, so maybe after that, gives me 18 months to get the thing sorted proper

[50RTD]

Fasts sufficiently loaded now....

[333pg333]

Great progress. Congrats. Looks like fun and as you say, still more to come!

[e30guy]

found 25 odd hp at the dyno today with just the external gate and different dump pipe. I must say it wasn't as dramatic a change as I was hoping, but definitely moving forward.

We now have proper control of the turbo with the external gate. 10psi spring pressure all the way to redline. I dialled in some boost using the ecu and we are running a solid 20 from 3500 to redline. Torque peaks @ 503ft/lbs and Power @ 265hp.

I'm guessing maybe this size ebay intercooler just isn't up to the job of making BIG power? About the only thing left in the system thats a bit on the small size (450x280x75), I have seen other SR guys find this problem. Currently it has enough power to spin wheels and will probably be a handful as it is so not worried. At the end of the day it puts a smile on my dial

Going to focus on the last few jobs to get ready for the next day out, Novemeber 17 at Eastern Creek.

[e30guy]

Eastern Creek was miserable. Wet, like saturated wet, lift pump died after 2 sessions.